Improvement in sawing-machines



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I.BLEWIS Wood Selwng M ac laine No. 121;(536,` Patented 080.5,187L

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Woocl sawing Machine Patented Dec. 5, 1871.

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Figa# 'Wnessaz AM P/fara-L/rHaseAM/c ca Mx/ asada/(fk fnofzss/ UNITEDSTATES PATENT OFFICE.

IRA B. LEWIS, 0F BELVIDERE, ILLINOIS.

IMPROVEMENT IN SAWING-MACHINES.

Specification forming part of Letters Patent No. 121,626, dated December5, 1871.

To all whom.. it may concern:

Be it known that I, IRA B. LEWIS, of Belvidere, in the county of Booneand State of Illinois, have invented a new and useful Improvement inWood-Sawin g Machines; and I do declare that the following is a true andaccurate description thereof, reference being had to the accompanyingdrawing and to the letters of reference marked thereon, and being a partof this specication, in which- Figure l, Plate l, is a side elevation ofmy device. Fig. 2, Plate 2, is a detached perspective view of thewood-clamping mechanism. Fig. 3, Plate l, is a plan of the machine; andFig. 4, Plate 2, is a section of the pitman, showing the method ofconnecting the same with the wristpm.

Like letters indicate like parts in each gure.

This invention relates to a machine for sawing cord-wood into fuel byhand-power, and it consists in the peculiar construction andarrangement, in a light wooden frame, of a pair of saws pivoted to avibrating frame, from the sides of which pitmen are coupled towrist-pins, actuating intermediate gearing and a iiy-wheel, so thatpower and motion applied to either saw-frame will be transmitted to theother; in a peculiar clamping mechanism, by means of which two sticks ofcord-wood may be held and operated upon at the same time 5 also, in anovel arrangement of the pitmen upon their wrists to prevent theirdetachment, and in the arrangement of the various parts, as more fullyhereinafter set forth; the complete machine being easily moved aboutlike a wheelbarrow, being provided with a traction-wheel and handles forthat purpose.

In the drawing, A are longitudinal wooden strips,framed together, andhave journaled in or under their front ends the traction-wheel B. a bare bars, transversely framed under and projectin g laterally from thestrips A. C is a frame standard, erected near the front end ofthe frame,properly braced and having a projecting arm, U', at each side. D is avibrating frame, pivoted at the upper ends to the arms C. E aredouble-cutting drag-saws, mounted in suitable straining-frames Ef, toeach of which a connecting-rod, F, is rigidly secured, and the other endof which is pivoted to the lower end of the vibrating frame D in such amanner that the saw-frames may be thrown up to nearly a verticalposition and there held, so that one saw may be used and the other not,if desired. Gr is a pair of bearing-blocks, erected at the back end ofthe frame and slanting forward, and having secured to their faces theserrated plates c, which dog into the wood laid against them. H is aninclined board, secured between the front ends of the strips A,projecting' below them in the mannerof a stationary jaw of a carpentersvise, and having pivoted in its lower end the rack-bar I, which engageswith a bolt in a vertical slot in the lower end oi' a plate, J, pivotedto and between the strips A on the other side of the board H. K is aclamp-jaw with its lower end pivoted to the board H, and is providedwith a serrated plate, d, on its face. L are iron straps, pivoted to thetop ofthe plate J, passing through a loop on the sides of the clampjawwith an eccentric lever, M, pivoted between their rear ends, whicheccentric bears upon the back edge of the clamp-jaw. A light leaf-springis arranged between the board and jaw to throw the latter back whenreleased. N are iron dogs, serrated on both edges and pivoted to thestrips A, the same being used when two sticks are to be sawed, beinginterposed between them so that they may be firmly held by the clampsand affording a chance for the sawdust to clear between them and notclog the saws.

To clamp a stick of wood the operator with his foot depresses theprojecting end of the rack-bar to disengage it from the plate J, andwith his hand draws the straps L toward him, leaving' the lever of thecam elevated; the dogs N are turned down out of the way, and the sticklaid against the bearing-blocks G; he now pushes the clampjaw and strapsforward until the former bears against the wood, the plate engaging withthe rack-bar below, when the clamping is completed by pressing down thecam-lever, which forces the serrated plates into the wood. If two sticksof wood are to be clamped the dogs N are interposed between them. Thesaws are now brought down upon the wood and the cutting process proceedsby vibrating one or both of the saw-frames by hand, cutting the stickinto three lengths of stove wood, as will readily be understood onreference to the drawing. To maintain and equalize the power applied toeither or both saws on top of the strip A I transversely journal theshaft O, carrying at each end a spur-wheel, P, meshing with and givingmotion through the pinions Q to the eountershaft R. transverselvjonrnaled on trop of the strips in front of the shaft (land earrying atly-wheel, S. These shafts are rotaed in the vibration of the fralne l)by a pitlnan, '1`,piv oted to a wrist-pin, e, on eaeh spur-gear and tothe side of said vibrating franle, so that the attendant may apply powerand give motion to one saw-fra1ne,\\hiel1 will be transmitted to theother, while the liy-wheel eqnalizes the motion of the parts.

The handles of the barrow-frame are made in two parts, U U', so jointedby the hinges g that the extremities may be folded out of the way insawing. A hook-braee, l1, also serves to stili'en them when extended`and to loelt theln when folded, as shown. To raise and lower the backend ofthe machine to the niost eonvenient plane for theoperator, thepart lv is in two pieees held together by a screw, and the squared headofthe leg V elalnped in a V-shaped soeket in eaeh piece, whieh affords aready nleans of adjustment. The wrist-pins of the spur-wheels being madewithout collars or tianges, to reduce their cost, the pitman isprevented from working oli' by a spring hook, f, seeured to the upperside of the pitman with its point passing` down the oil-l1ole of thepitnian and resting in a groove turned in the wrist-pill.

The entire device need notJ weigh over one hundred and thirty pounds;hence, it can easily be moved about.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. The eonstruction and arrangement; of the strips A, wheel B, framestandard C, vibrating frame l), rods F, saws E, saw-frames E', theclamping parts G, H, l, J, K, L, and M, or their equivalents, the shaftsO 1i, gears l Q, ily-wheel S, pil',- man T, and handles U U',substantially as and for the purpose set forth.

2. The spring-hooks f, as and for the purpose specified.

3. The hinged or folding handles U U and legs V, when eonstrueted,arranged, and operating in the manner and for the purpose set; forth.

Witnesses: IRA B. LEWIS.

H. F. EBERTs,

W. S. RoGERs. (130)

